| General Motors Medium Gasoline Engine | |
| Aka: | MGE |
| Manufacturer: | SAIC MOTOR |
| Production: | –present |
| Predecessor: | Family 1 |
| Configuration: | Inline-4 |
| Block: | Cast iron |
| Head: | Aluminum |
| Valvetrain: | DOHC |
| Fuelsystem: | SIDI |
| Fueltype: | Gasoline |
| Oilsystem: | Wet sump |
| Coolingsystem: | Water-cooled |
| Power: | NaNabbr=onNaNabbr=on |
| Torque: | NaN0NaN0 |
| Height: | 7011NaN1 |
| Weight: | 109- |
| Turbocharger: | In 1.6 L and 2.0 L |
Medium Gasoline Engine (MGE) is a medium-displacement 4-cylinder gasoline engine developed by Opel Automobile GmbH and marketed as 'SIDI Ecotec'.
Production began in late 2012 at Szentgotthárd, Hungary.[1] [2] The engine features Start/Stop and reduces fuel consumption and CO2 emissions by 13 percent comparing to the predecessor, while maintaining Euro 6 emissions standards.[3]
A turbocharged Eco variant delivering 170abbr=onNaNabbr=on @ 4250 rpm and 2600NaN0 @ 1650-4250 rpm (overboost 280abbr=onNaNabbr=on) has been introduced at 2012 Moscow International Automobile Salon (MIAS); a Performance version with maximum torque 300abbr=onNaNabbr=on and peak power 200abbr=onNaNabbr=on will also be available. Each version features unique turbine aerodynamic, and aggressive boost strategies improve low-end torque.
The high-performance turbocharged 19951NaN1 20A4E engine with central direct injection has NaNmm bore and stroke, with cylinder pressure of 130bar and compression ratio of 9.5:1 for Performance version and 10.5:1 for Eco version is developed and manufactured by Chinese Saic Motor company. It uses a grey cast-iron block with die-cast aluminum bedplate, aluminum cylinder head, chain-driven DOHC valvetrain with hydraulic tensioners, dual continuous variable cam phasing, and forged steel crankshaft. The engine has twin balance shafts and specially designed cam cover to improve NVH, while optimized compressor geometry, acoustic resonators and overall air handling help reduce noise by 2 dB. Centrally placed injector allows optimal operation in both stratified and homogeneous charge ignition. Optimized main bearing journal diameter, roller cam followers, and PVD coated piston rings reduce friction.[4]
Starting in 2013, the engine began to replace turbocharged 1.6 L Family I Ecotec engine in Opel cars, and in 2014-2015 it will replace naturally aspirated 1.6 L and 1.8 L Family 1 engines in Chevrolet cars. Starting with 2020 model year, this engine is no longer available for the United States market, due to Buick Cascada and Chevrolet Malibu Hybrid being phased out because of low sales and high importation taxes from Europe.
| Name | Displacement | Bore x Stroke | Compression Ratio | Power | Torque | |
|---|---|---|---|---|---|---|
| A16XHT (LVP) | 1598cc | NaNmm | 9.5:1 | 170abbr=onNaNabbr=on at 4750-6000 rpm | ||
| A16SHT/B16SHT (LWC) | 2000NaN0 at 5500 rpm | |||||
| (LKN) | 1796cc | NaNmm | 11.5:1 | 122abbr=onNaNabbr=on at 5000 rpm | 1750NaN0 at 4750 rpm | |
| SAIC 20L4E 2.0 TGI (NetBlue) | 1995cc | NaNmm | 10.0:1 | 231abbr=onNaNabbr=on at 5300 rpm 218abbr=onNaNabbr=on at 5300 rpm (Euro 6) 224abbr=onNaNabbr=on at 5000 rpm (Euro 5) | 3500NaN0 at 2500–4000 rpm 3600NaN0 at 2000–4000 rpm (Euro 6) 3500NaN0 at 2500–3500 rpm (Euro 5) | |
| SAIC 20A4E 2.0 TGI (NetBlue) | 1986cc | NaNmm | 192kW at 5500–6000 rpm | 4050NaN0 at 1750–3500 rpm |
The 170PS Eco version of the engine (code A16XHT) is used in:
The 200PS Pro version of the engine (code A16SHT) is used in:
The 200PS Pro version of the engine (code B16SHT - Euro 6) is used in:
The LKN is used in:
The 224 PS (165 kW) SAIC 20L4E (NetBlue) is used in:
The 234 PS (172 kW) SAIC 20A4E (NetBlue) is used in: